DESCRIPTION

Flies through height maps, optionally animating the instantiation and
destruction of generated tiles; by default, tiles ’grow’ into place
(height gradually increased up to correct value). In windowed mode the
following key controls are available:
left,right
Turn left and right.
a,w,s,d Move left, forwards, backwards, and to the right, respectively.
1,2 Decrease and increase manual speed, respectively.
Spacebar
Return to automatic control.

OPTIONS

zephyr accepts the following options:
-root Draw on the root window.
-window Draw on a newly-created window. This is the default.
-install
Install a private colormap for the window.
-visualvisual
Specify which visual to use. Legal values are the name of a
visual class, or the id number (decimal or hex) of a specific
visual.
-delaymicroseconds
Delay between frames; default 20000 (1/50th of a second).
-fps Display frame per second and polygon counts.
-crack Use all possible methods to animate tile instantiation.
-boring Do not animate instatiation at all; use this to get standard
landscape generator behavior.
-letterbox
Drawable window region has a 16:9 aspect ratio, regardless of
actual window size.
-lit Enable lighting.
-flat Flat shading (OpenGL will use one color per primitive, rather
than interpolating betwixt vertices).
-wire Wireframe.
-nowater
Do not display ’water’ (forces negative values to zero, and
selects a different coloring method).
-visibilityfloat
Value in range [0.2,1.0] (default 0.6) specifying proportion of
viewable XY plane which is to be drawn upon.
-colorstring
Selects color scheme. Use with no or bogus argument for
current list.
-nsubdivsinteger
Number of times to recursively subdivide each triangular tile.
Each increment increases total triangles by a factor of 4; for
instance the default setting 4 results in 256 triangles per
tile.

ENVIRONMENT

DISPLAY to get the default host and display number.
XENVIRONMENT
to get the name of a resource file that overrides the global
resources stored in the RESOURCE_MANAGER property.